Relationship of Hemoglobin type with the reproductive performance in Holstein cows for selection
DOI:
https://doi.org/10.59658/jkas.v3i3.542Abstract
This study was undertaken to investigate the relationship of hemoglobin type with the reproductive performance in Holstein cows for selection purposes. This study was executed at the Dairy Cattle Farm and Physiology Laboratory pertaining to the College of Agriculture, University of Baghdad, as well as in private molecular genetics laboratories during the period from 1/11/2013 to 1/11/2014. Blood samples were collected from 40 Holstein cows, and the hemoglobin types were identified using electrophoresis technique. Records were obtained for cow's reproductive performance and their birth death data until weaning. The effect of hemoglobin type on service per conception, interval between calving and subsequent successful mating and non-return rate to estrus was significant (P≤0.05), being all better in AB type. Greater (P≤0.01) variation was noticed in calving interval trait among the cows, being shorter in AB type. On the other hand, higher and lesser (P≤0.05) calves death rates at calving (2.95 ± 0.04 and 1.37 ± 0.04% respectively) were detected in those with B and A types respectively. Moreover, death rates at calving to weaning interval were also influenced by hemoglobin types, being higher (P≤0.05) in B type (9.82 ± 0.07%), along with non-significant differences detected between A (4.69 ± 0.07%) and AB (5.08 ± 0.04%) types. In conclusion, the hemoglobin type can be adopted type of hemoglobin can adopted as selection tool to improve the reproductive performance of Holstein cows, through selecting those with AB type to maximize the economic gain of their breeding projects.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2016 Journal of Kerbala for Agricultural Sciences
This work is licensed under a Creative Commons Attribution 4.0 International License.
Licensing Terms
All articles are published under a Creative Commons License and will be directed to the Creative Commons Attribution 4.0 International License That permits use, distribution, and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
Use by non-commercial users
For non-commercial and non-promotional purposes individual users may access, download, copy, display, and redistribute the articles to colleagues, as well as adapt, translate, text- and data-mine the content subject to the following conditions:
- The author's moral rights are not compromised. These rights include the right of "paternity" (also known as "attribution" - the right for the author to be identified as such) and "integrity" (the right for the author not to have the work altered in such a way that the author's reputation, or integrity may be impugned).
- Where content in the article is identified as belonging to a third party, it is the obligation of the user to ensure that any reuse complies with the copyright policies of the owner of that content.
- If article content is copied, downloaded, or otherwise reused for non-commercial research and education purposes, a link to the appropriate bibliographic citation (authors, journal, article title, volume, issue, page numbers, DOI, and the link to the definitive published version on JKAS website) should be maintained.
- Copyright notices and disclaimers must not be deleted.
- Any translations, for which a prior translation agreement with JKAS has not been agreed, must prominently display the statement: "This is an unofficial translation of an article that appeared in an FSP publication. The publisher has not endorsed this translation."
Use by commercial "for-profit" organizations
Use of JKAS Open Access articles for commercial, promotional, or marketing purposes requires further explicit permission from JKAS (journal.agri@uokerbala.edu.iq) and will be subject to a fee.
The commercial purposes include:
Copying or downloading of articles, or linking to such articles for further redistribution, sale, or licensing; Copying, downloading, or posting by a site or service that incorporates advertising with such content; The inclusion, or incorporation of article content in other works, or services (other than normal quotations with an appropriate citation) that is then available for sale or licensing, for a fee (for example, a compilation produced for marketing purposes, inclusion in a sales pack); Use of article content (other than normal quotations with appropriate citation) by for-profit organizations for promotional purposes; Linking to article content in e-mails redistributed for promotional, marketing or educational purposes; Use for the purposes of monetary reward by means of sale, resale, license, loan, transfer or other form of commercial exploitation such as marketing products; Print reprints of articles can be purchased from journal.agri@uokerbala.edu.iq.
Permissions
- No special permission is required to reuse all, or part of the article published by JKAS, including figures and tables for non-commercial purposes.
- Any part of the article may be reused, for non-commercial purposes, without permission provided that the original article is cited.
- Reuse of an article does not imply endorsement by the authors, JKAS
